Window-ventilator.



' No. 757,201. PATENTED APR. 12, 1904.

" H G KIDWELL WINDOW VENTILATOR. APPLIOATION FILED MAR. 7, 1902.

N0 MODEL.

UNITED STATES Patented. April 12, 1904.

PATENT OFFICE.

HARRY o. KIDWELL, or WASHINGTON, nisrnro'r OFCOLUMBIA, AssreNoR o THEPULLMAN AUTOMATIC VENTILATOR coMPANY, or YORK, PENNSYLVANIA, ACORPORATION or WEST VIRGINIA.

WINDOW-VENTILATOR.

SPECIFICATION forming art of Letters Yatent o. 757,201, dated April 12,1904.

Application filed March 7, 1902.

To all whom it, may corwern:

.Be it known that I, HARRY O. KI W'ELL, a

' citizen of the United States, residing at Washington, in theDistrictof Columbia, have .in-

vented certain new and useful Improvements in Window-Ventilators, ofwhich thefollowing is a specification.

My invention relates to ventilators adapted to be inserted under thelower sash of a win- IO dow,.and has for one of its objects to providemeans whereby the length of the board holding the ventilator may bereduced in length sufiiciently to permit its insertion between the sidesof the frame without removing the strips holding the lower sash in placeand after the ventilator is in place lengtheningsaid board,

so as to make it fit the frame air-tight.

Another object of my invention is to provide a peculiarweather-stripping on the top of the board so arranged as to preventwearing out the strip and at the same time snugly fit the lower edge ofthe lower window-sash.

Further objects ofmy invention will more fullyappear hereinafter and byreference to;

the accompanying drawings, in which Figure 1 is a front elevation of awindow, showing my impro red ventilator in place;

a View of the ventilator-board, show- .ing it 3 Fig. 3, an enlarged sideview of Fig. 1-, partly in section; Fig. 4, a top view of Fig. 2, partlyin section; Fig. 5, adetail View of the slotted plate employed in mydevice, and Fig. 6 an enlarged cross-section of the detachable strip.

Referring to the drawings, in. which simi lar reference charactersindicate correspond:

ing parts throughout the several views, A

represents the ordinary pulley-stiles of a window-frame between whichthe upper and lower 4 sashes B and B are adapted to be raised andlowered, and C the stop-bead to hold the lower sash B in place.

D represents the ventilator-board to be inserted under the lower sash B,having an approved form ofventilatorwalve E- secured rranged forinsertion in the window;

Serial No. 97,168- (No model.)

thereto. As it is desirable to have the-board vD fit snugly between thestiles A of the win doW-frame and it is a great inconvenience to Iremove the beading C, I provide peculiar means for reducing the lengthof the board D sufiiciently to permit its insertion under the lowersash, so as to avoid said beading C. This is done by cutting a piece Foff of either or both ends of said board D on a line G, commencingseveral inches from the end of the top. edge of said-board, downwardlyin an oblique directiontoward the outer end of the,

lower edge of said board. A plate H, made, preferably, of metal, is theninserted in a groove h, cut into the beveled edge of the board D andsecured therein in any suitable manner, said plate H having a portionprojecting out of the plane of said beveled edge which has a slot Icuttherein parallel to said beveled edge and its lower endcut at rightangles to the lower edgeof the board D, as shown at K, to intersect thelowerfendof said beveled edge. The piece F is formed with a groovef cutinto its bevelededge to receive the projecting portion of the plate Handslidably secured thereto by means of a pin L, inserted through the pieceF and the slot 1. It will be readily understoodgthat when the piece F israised the distance between the two ends of, the board D is reduced, sothat it. may be inserted between the stiles A without interfering withthe beading O, and when it is lowered the board is its full length. Ifit "is desired, the same device may be provided at each end, so thatthelength of the board may be reduced at either or both ends.

0n the top edge'of the board D and piece F is secured suitableweather-stripping, shown in this instance to be a strip of rubber-coatedfabric M, having its two edges secured in grooves n in a strip N andsaid strip N secured in a groove O in the top of the board D andend'piece F. As in practice it has been found that the lower edge of thesash if allowed .to rest directly on the weather v stripping would intime mash it down and impair its usefulness, I provide an auxiliarystrip P, having its lower edge grooved, as shown at Q, to fitover theweather-strip and its top edge-slightly beveled, as shown at R, to litthe usual bevel on the lower edge of a windowsash.

represents a stripof felt or other suitable material secured to the topedge E of the strip P to take up the irregularities in the bottom of thesash and make the space between said sash and said top edge R air-tight.

I T represents a tuning-block secured to the end of the board D and theouter edge of the piece Etc make up the thickness of the sash sion,whereby a dust-proof joint is provided between the two members when intheir normal position, and means carried by said extension and seatand'constructed to maintain the two members with their beveled edges inparallelism, substantially as described.

2. As a new article of manufacture, a venti later-board comprising twomembers having beveled edges arranged in sliding engagement, anextension carried on the engaging edge of one member, a seat in theengaging edge of the other member formed to contain said Q-X-I tension,whereby a dust-proof joint is provided between the two members when intheir normal position, and means carried by said extension and seat andconstructed to rnaintain the two members with their beveled edges inparallelism and to limit their'relative movement, substantially asdescribed.

3. In a window-ventilator, board formed in two pieces havingcorresponding beveled edges, said pieces being adapted to slide on saidbeveled edges, slotted plate secured in the beveled edge of one piece,and the other piece secured near its beveled edge to .said plate throughsaid slot, substantially as shown and described.

4:. In a window-ventilator, board having a slanting end, a slotted platesecured thereto,

an end piece having a slanting end to fit the slanting end of saidboard, and means to se cure said end piece through said slot,substantially as and for the purpose shown and described,

5, In a window-ventilator, a board formed in two pieces bya out on anoblique line, aslctted plate secured to one of said pieces, and a pin inthe other piece inserted through said slot, substantially as and for thepurpose shown and described.

6. In a window-ventilator, aboard formed with a projecting weather-stripon its upper edge, and a grooved strip to lit over said projectingweather-strip, substantially as shown and described.

7 in awindow-ventilator, aboard formed with a projecting weather-stripon its upper edge, and a strip grooved to litover said weather-strip andhaving its top edge beveled toward the exterior of the window,substantially as shown and described.

8. in a window-ventilator, aboard having a slanting end, a plate securedin said slanting end and projecting therefrom, the projecting portion ofsaid plate slotted, an end piece having a slanting edge to fit theslanting end of said board and grooved to receive the projectingportionof said plate, and a pin to secure said end piece in said slot,substantially as shown and described.

9. in a window-ventilator, aboard having a slanting end, a plate securedin said slanting end and projecting therefrom, said projecting portionof said plate having a slot therein parallel with said slanting end, anend piece having a slanting edge of the same degree as the slanting endon said board, a groove in said slanting edge to receive the projectingportion of said plate, and a pin inserted through said end piece and theslot in said plate, substantially as shown and described.

10. A window ventilator consisting of a board formed in two pieces by acut made on an oblique line, means to permit said pieces to be slidablyadjusted on said obliquely-cut line, a projecting weather-strip on thetop edge of each part of said board, and a strip grooved on its loweredge to fit over said pro-- jecting weather-strip, substantially asshown and described,

11, In a winddwwentilator, a board formed with a projectingweather-strip, a strip grooved to lit over said projecting weatherstrip, and a piece of felt secured to the top edge of said strip,substantially-as shown and described.

12, in a windowwentiletor, a board formed with. a projectingweather-strip, a strip grooved to fit over said projecting weatherstriphaving its top edge beveled toward the exterior or" the window, andapiece of felt secured to said beveled edge, substantially as shown anddescribed.

13, in a window-ventilator, a board having slanting end, a plate securedin said slanting end and projecting therefrom, said projecting portionof said plate having a slot therein pal allel with said slanting end, anend piece hav ing a'slanting edge ofthe same degree as the ITO "slantingend of said board, a groove in said slanting edge to receive theprojecting portion of said plate, a pin inserted through said end pieceand the slot in said plate, a furringblock in the outer end of saidboard and at the outer edge of said end piece, a projectingweather-strip on the top edge of said board and end piece, a stripgrooved to fit over said projecting weather-strip, the top of said stripbeveled fit the bottom of a window-sash, I and a piece of felt securedto said beveled edge,

substantially as shown and described.

In testimony whereof I hereto aflix my signature in thepresence of twowitnesses.

HARRY C. KIDWELL.

. Witnesses:

JAMES K. POLK, I S. F. RANDOLPH, J r.

